Machine for grinding, smoothing, and polishing plate-glass.



No. 873,340. PATENTED DEC. 10; 1907.

E. BAGNALL. I MACHINE FOR GRINDING, SMOOTHING, AN'D POLISHING PLATE GLASS.

APPLICATION FILED AUG. 19, 1904.

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PATENTED 1330.10, 1907.

v B. BAGNALL; MACHINE FOR GRINDING; SMOOTHING, AND POLISHING PLATE GLASS.

APPLIOATION FILED AUG. 19, 1904.

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No. 873,340. I PATENTED DEC. 10, 1907.

E. BAGNALL, MACHINE .POR GRINDING, SMOOTHING, AND POLISHING PLATE GLASS.

ABPLIOATION FILED AUG. 19, 1904.

7 SHEETS-BEER! 3.

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PATENTED DEC. 10, 1907;

E. BAGNALL. MACHINE FOR GRINDING, SMOOTHING, AND POLISHING PLATE GLASS.

APPLICATION FILED AUG. 19, 1904.

7 SHEETS-SHEET 4.

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@ 7%4ZZPW No. 873,340. PATENTED DEG. 10, 1907.

E. BAGNALL.

MACHINE FOR GRINDING, SMOOTHING, AND POLISHING PLATE GLASS.

APPLICATION FILED AUG. 19, 1 904.

7 SHEETS-SHEET 5.

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N0. 873,340. Y PATENTED DEC. 10, 1907.

E. BAGNALL.

MAClEiINE FOR GRINDING, SMOOTHING, AND POLISHING PLATE GLASS. APPLICATION FILED AUG. 19, 1904.

7 SHEETS-SHEET 6.

Qfififnewm: I (271105111271- @MWWW allgagwzaffw No. 873,340 PATENTED DEC. 10, 1907.

E. BAGNALL.

MACHINE FOR GRINDING, SMOOTHING, AND POLISHING PLATE GLASS.

APPLICATION FILED AUG. 19, 1904.

' 7 SHEETS-SHEET 1.

W G mia uwffl UNITED srArEs PATENT O I E f EDWARD BAGNALL, 0F PITTSBURG, PENNSYLVANIA.

'mecmnn non GRINDING, smoo'rmne, Ann Ponsm m PLATE-GLASS.

grinding and polishing glass, and the rimary object of my invention is to 'provi. e novel means by which these operations will be greatly accelerated and the cost of labor thereby reduced to a minimum,

A' further object of this invention is to provide effective and economical means for successfully smoothing and polishinga glass surface, and toaccomplish this result, I employ several features which I believe to be new and which I desire to cover, both separately and in combination with each other. v

.My invention contemplates the novel co'm- .bination of several elements which will noW- be briefly described.

The main element of my invention comprl'ses a traveling frame upon whlch several mechanisms are constructed and operated,

and this frame is adapted to be propelledby' electricity froma tnolley wlre which may extend the, entire length of a building con-h structed to o eratemy invention. therein.

, The seconelement consists of mounting two eccentric runners upon'the frame work whichwill be operated by mechanism'can'ied thereon and in conjunction withsaid runners I employ a novel form of agitating means for polishing andgrinding a plate of glass.

, Another element consistsof anovel form of table upon'which the plate of glass is to be supported and in connection'with said table I means are employed to revolve the same and maintaina vacuum therein whereby the'plate of glass will be firmly held u on the table.

- A further element of my invention'consists of a novel form of derrick or crane which may be employed as a convenient adjunct to 'my improved machinethis derric k being ada ted to transfer, the glass plates from one tab e to another, and Iemploy novel means for operating said derrick and-for gripping the late i :of glass to be transferred from one tab e to" another.

' The dill'ercnt elements above described Specification of'Letters Patent. Application filed August 19. 1904. Serial No. 221.372.

Patented Dec. 10,1907.

comprise a great number of small' mechanisms which will be hereinafter described'in detail and reference will now be had to thedrawings accompanying this application,

whereifi similar reference characters designate' corresponding parts throughout the several views, invwhic Figure 1 .is an end view of my improved machine showing the runnersand the table invertical section, Fig. 2 is a top plan view of the same, Fig. 3 is a horizontal sectional view of one of the tables, Fig. 4 is a top'plan view of amodified form of table, Fig. 5 is' a verticalsectional view of the'form of table shown in Fig. 4 of the drawings,Fig. 6 is a side'elcvation of one of theadju'st'able frames used an connection with my improved machine, Fig.

7 is a top plan view of the: same, Fig.8 is amodification .in side elevation of a traveling frame, Fig; 9 is'a top planviewof the 'same, Fig. 10 is a fragmentary view of. the frames of a building which may be constructed wherein my improved machine may be operated,'an- 5 0t er modified form of my improved machlne .being illustrated therein, Fig. 11 is a side elee vation of the same, Fig. 12 is a top plan view "thereof, and Fig. 13 is a side elevation of the derrick or crane which may be used in connection with e ther one of the constructions illustrated in the above views,

Reference, will first be had to Fi s. 1, 2 and 3 of the drawings wherein the pre erred form of my improved machine is illustrated and in constructmg' this machine it is necessary that the base u on which the same is ,"to be'suported an travel, be so constructed as will acilitate' the handling and operation of the" same, and the reference characterA designates a table in its entirety which is constructed in accordance with my invention and that the,

merits and general usefulness of nfy in'vention be realized, it may be stated that it is necessa that a'p lurality of these tables be emp1oye i said tables being arranged in a suitable building in which my improved apparatus or machine is to *be operated. In 1g. 1 of the drawings, I have illustrated a vertical sectional view of one -of :the tables, and in erecting my improved tables the base upon which they are to be supported is excavated or (provided with 'a' counter-sunk portion B,

tral opening 2 and in said standard is rotatably mounted the vertical central shaft 3 inthis counter-sunk portion is mounted a standard 1 which is provided with a centhis shaft being provided with the double pulleys 4, 4 upon its lower end, the object of which will be hereinafter described. The

shaft 3 is hollow as designated at 5 and formed integral with said shaft at right angles thereto is an annular plate '6 which forms the bottom of my improved table. Centrally of said table is provided an aperture 7 which communicates with the hollow shaft 3 and in said aperture is mounted a pipe 8 which is secured therein by plates 9. The ipe 8 is erforated as indicated at 10 and to the ower end of said pipe is connected a pipe 1 1 which passes through the base 0 and communicates with a reservoir or tank 12. This pipe is provided with a valve 14. The reservoir 12 is connected by a pipe 15 to an exhaust )um 16 the object of which will be later described. The shaft 3 is provided with a plurality of apertures 17 in which are secured pipes 18 carrying valves 19 and :these pipes are bent upwardly and engage in a ertures 20 provided in the annular plate 6.

pon this plate is secured a casing 21 which is providei with depending ribs 22 that are circular in form as clearly sh0wn in Fig. 3 of the drawings whereby a plurality of artitioned compartments are provided an with each compartment one of the pipes 18 is adapted to communicate. The casing ,21 is provided with a plurality of apertures 23 which communicate with one of the compartments formed by the ribs 22 and u on the top of the casing-is placed a sheet 0 resilient material such as rubber 24 which supports a plate 25, said plate and resilient material being provided with apertures 26 which communicate with the apertures 23 of the casing, and upon the plate 25 is adapted to be supported the sheet of glass 27 to be ground or polished. The manner of manipulating and handlin the pieces of lass upon.

this table is as fol ows: The tab e A is revolved by cables or belts 28 which ass around the pulleys 4,4 and around pu leys 29, 29 keyed to a shaft 30 which is vertically mounted within the triangular frame 31, said shaft being carried by arms 32, 32

carried by said frame. The base 33 of the frame is provided with slots 34, 34 andthe frame 31 is adapted to be adjusted by the bolts and nuts 35 wherebythe tension of the cables or belts 37 may be increased or decreased as desired. The shaft 30 is provided with a ulley 36 over which asses a belt 37 to a pu ley 38 carried upon t e shaft 39 of a motor 40 which is laced in a convenient place to said machine. Upon a piece of I glass to be ground or olished being placed upon said table, the va ves 19 of the pipes 18 are opened and the exhaust engine 16 is started to exhaust the reservoir 10, the standard and the compartments formed by the partitions 22, and as a vacuum is formed within said compartment the sheet of glass 27 will be held upon the table by suction and may be maintained thereon while the table is being revolved and if it be so desired the valve 19 may be closed to maintain this vacuum within the table and. the exhaust engine 16 may be used for other purposes until it is again necessary to renew the vacuum which has been created within the table.

As heretofore stated, to fully accomplish the purposes of my invention it is necessary that a lurality of tables, constructed as above escribed, be employed, whereby while a piece of glass is being placed upon one table, another table may be in operation, this with whic glass may be ground. In order to grind the glass upon different tables, I

have cc nstructed a travelin frame D which is adapted to travel over t e tables A and grind the glass upon each table. The travcling frame D comprises four vertical standards 41 which are braced together by the side frames 42, 42 and the end frames 43, 43 and the longitudinal braces 44, 44 and 45 the brace 45 being located centrally of said frame. Between the standards 41, 41. upon each side of the frame are provided braces in which are journaled the shafts 46, 46, 46 carrying upon their outer ends the flanged wheels 47, 47 and upon their inner ends the beveled gears 48, 48. The frame is adapted to travel u on tracks 49, 49 arranged upon each side 0 the tables and upon each side of the base which su ports said tables. To propel said frame affmg the tracks, the gear wheels 48, 48 mesh with beveled gears 50, 50 mounted upon the lower ends of the vertical shafts 51, 51 journaled in suitable brackets 52, 52 carried by the side frames of the frame D. The upper ends of these shafts are rovided with beveled inions 53, 53 w ich mesh with beveled pinions 54, 54 carried upon the outer ends of shafts 55, 55, that are journaled in the bearings 56, 56 carried upon the lower longitudinal braces 44, and the inner ends of said shafts 55 are provided with clutches 57, 57 which are connected to the ends of the shaft 58 of the motor 59 the clutches 57 being of the usual well known type and operated in any well known or ape proved manner.

The mechanism which com rises the grinders and polishers consists of t e runners E and F these runners comprising vertical shafts 60 and as each runner is identical in construction I deem it only necessary to describe one of said runners, but before doing so I desire to call attention to the fact that one of said runners is of a smaller diameter than the other whereby during the travel of said runners a greater area will be covered upon the glass and a more changeable and irregular path described by said runners as will be particularly brought out in the deprocedure facilitating the rapidity scription of the construction ofone of said runners. The runner as constructed by me consists of thevertical1 shafts 60, 60, these shaftsbeing-rotatably mounted in the upper ners whereby the heads 61- may be removed uickly' and easily and other heads placed t ereon.v By so constructing the'runners it will be possible to provide a head particularly for grinding and another head may be readilyIemployed' for polishing.v .Theheads are therefore secured upon the lower end of the vertical shafts by keys 62 which pass through the collar 63 carried by said heads and to prevent theground glass or any other ingredients from resting u on the top ofthe heads 61- I have, rovide a two-part cone shaped cover 64 w ich is adapted to fit u on the runner and precipitate all ground g ass or ingredients that may settle upon the same.

To the upper ends of the vertical shafts 60', 60 of the runners are secured collarsj65, 65 and under this collar is arranged a collar 66 which is carried on the end of a lever 67 which is pivotal] mounted in a bearing68.

mounted upon two transverse beams 69, 69-

1 carried between one of the side frames and the frame 44. ,To the outer end of the lever is pivotally connected a rod 70 this'rod being screw threaded as indicated at 71 a portion. of its length, and passing through a screw threaded sleeve 72 carried by a bracket 73 secured to a central vertical standard 74 indicated by dotted lines in Fig; 2 o'f the .drawingsr The lower end of the screw'threaded portion of the rod 70 is prbvided with a hand wheel 75 and by rotating said wheel until it sc-engagesthe sleeve 72 and further rotating said 'wheel "the rod. 70 can be drawn downwardly and through the medium of the levers 67-the shaft 60 can be raised; Between the upper and lower end frames 44 and upon the shaft is mounted a beveled gear 76, this gear jbeing slidablymounted upon theshaft and the shaft is provided witha rib 7 7 whereby if the gearwheel 76 is rotated said shaft 60 Wlll rotate 1n unison therewith. Meshing so with this gear wheel 76 isa beveled gear wheel 78 which is carried upon the outer end "of an operating shaft 7 of a motor 80." The motor 80-is secured to a bracket 8] carried by the central vertical standard 741 This construction just described is duplicated in connection with the other runner upon the opposite side of the frame as will be clearly seen in ,Figs. 1 and 2 of the drawings.

' The longitudinal brace 45 'is provided with a post 82 towhich is pivotally connected it two-armed trolley 83 and each arm of the trolley is bifurcated as indicated at 84, 84

and has mounted therein a trolley wheel 85. In the building in which my improved frame D and the tables A are mounted, Ijntend to employ a trolley system and the trolley just described is adapted to travel ufon a wire (not shown) and the movement 0 said frame D is to be controlled by 'a suitablecontroller .-carried either bfy the frame or mounted upon a suitableplat travel of saidframe.

by -the direction of travel of the frame D may be easily changed by simply raising orlowering the trolley pole to engage one or the other of said trolley wheels with the trolley wire;

The operation of the frame just described is as follows: 'We will assume that the tables By "employing the two-armed trolley pole 83 one trolley will orm adjacentto the path of- A A are in o eration and-a piece of glass is u on each tab 'e employed and it is desire to grind, .smooth .andipolish the same.' The,

operative placed the clutches 57 in engagement -witheachother and then places the motor 59 in operation andfrom said motora 'rotary movement iwill be transmittedto-th wheels 47 and the entire frame work carrying the runners E and F may be moved over a table A and it may be moved from one table to theIother when the glass upon one table has been groundand polished' The frame having been positioned over a'tablc 'them'otors 80,- .80are placed in operation by the operator and a rotary movement. will be trans- "loo 1 mitted from said. motors to the.runners E and F-and while said runners are revolving the hand wheels 75 are operated to lower the runners into engagement wit glass carried by the table. surface .to be ground off 'of the glass is governed byfthe pressure and themovement of the piece of The amount of l said runners E and I1 'upon theglass and it quantity of glass maybe ground from off the (will be readily understood that-a greater plate by forcing the runners into engagement with-:said plate of glass. The revoluble .movementtransmittedto said runners will cause the abraders'or grinding-rubbers 62 to grind the surfaceof the glass and as these runners are eccentrically mounted, the glass will be evenly ground upon its top surface as the table revolves. When it is desired to re- 'move the plate of glass from the table, the

motors 80, 80 are placed out of action and the hand wheels 75 are rotated to raise the runners from engagement with the plate of glass, at wnich time the motor 59 may be operated to move the frame B from over the table, and upon the vacuum formed in the table being relieved, the plate of glass 29 may be removed from said table.

I In Fig.- 4 I have illustrated a modified form of table wherein a different arrangement of the pipes is shown and in the arrangement illustrated in this figure exhaust pipes 86, 86 enter the edge of the table and pass through the partitions to different compartments. Each of the pipes 86 passes to a difierent compartment from the others whereby when the exhaust engine 16 is .placed 1n operation each one of the compartments' formed by the partitions will be exhausted. In connection with the table A and the frame D of my improved machine I intend to employ novel means for transmitting the plates of glass from one table to another or from any suitable place to said tables. It is a well known fact that it requires some skill to handle large plates of glass without breaking or injuring the same, and where my improved tables are employed I intend to construct a suitable derrick upon I one side of the'tables whereby a plate of glass may be lifted from said table and transmitted to another or to a suitable place. The form of derrick which I intend to use is illustrated in'Fig. 13 of the drawings yet I do not care to lnnit myself to this specific form but may embo y the mechanisms shown in connection therewith, into an overhead crane. The main feature of my improved derrick is the provision of novel means for engaging the plate of glass to be moved and this novel means consists of the casting 87 'whichis preferably annular in necter form and this casting is constructed u on similar lines to the casting 21 of the ta le, said casting bein provided with a plurality of apertures 88 w ich communicate with the compartment 89 formed by the annular partitions 90.. The casting s supported by a central pipe 91 and by the angularly disposed rods 92 said rods andpipe being carried by a member 93 which is "pivotally conas indicated at 94 to the hollow boom 95 of the derrick. This boom is pivotally connected as indicated at 96 to the mast ,97,

said mast bein suitably braced and revolubly mounted 1n the base 98. The mast 97 is provided with a ring 99 to which said boom is pivotally connected and I employ drums 100 and cables 101, 102 to raise and lower the boom 95 carrying the casting 87. The

drums 100 are operated by a suitable motor 103 and the cable 102 passes over a pulley 104 mounted at the top of the mast and is connected as indicated at 105 to the ring 99 w 'reby when said drum is operated the -rin ma be raised to project the boom outwardly rther' than what it is shown in Fig. 13 of the drawings. The cable 101 passes over another pulley 106 and is connected to the outer end of the boom 95 whereby this end of the'boom will be raised when the drum is rotated. In connection with the mechanism just described I employ an exhaust engine 107 which is operated by the motor 103 and a flexible pipe 108 is connected to said exhaust engine and the hollow boom 95 and from said boom a flexible ipe 109 connectswith' the vertical pipe 91 w iereby when said engine is placed in o eration the casting 37 may be exhaustedo all air, and a suction formed between the plate of glass 27 and said casting. The reference numeral 110 designates a beveled gear which is secured to the lower portion of the .mast' and this gear meshes with a beveled gear 111 carried upon the operating shaft 112 of the motor 113 and by thismechanism the mast may be revolved to swing the boom from one table to another. The reference numeral 114 designates a controller or switch board which is mounted adjacent to said derrick whereby an operator may manipulate the different parts or mechanisms of the derrick. The operator, should he desire to remove a plate of glass from-the table A, operates the motor 103 to lower and move outwardly or inwardly the casting 87 to position the same upon the sheet of glass 27 carried bythe lable. At this time the engine 107' is put in operation by the operator to exhaust the air from the casting 87 and form a vacuum between the plate of glass and the casting at which time the vacuum is maintained and the motor 103 is again operated to raise the glass a suflicient height above the table whereby the same may be swung around and to accomplish this the motor 113 is placed in operation which will revolve the mast through the medium of the gears 110 and 111 and swing the boom to the desired position above another table or platform at which time the casting 87 is lowered and the vacuum relieved in the casting S7 to release the lplate of glass 27.

T e construction of the tables A, the frame D and the derrick above described is the preferred form of construction and reference will now be had to Figs. 8 to 12 inclusive where I have illustrated modified forms of construction in which a simpler construction is employed and other means than heretofore described for operating the frame work D and the runners E and F. Reference will first be had to Figs. 8 and 9 wherein I have illustrated other means than those above described for revolving the runners E and F and in these figures the reference nu merals 114 and 115 designate vertical shafts which carry the runners E and F, these runners being similar in construction to those heretofore described. Upon the vertical shafts 114 and 115 I mount pinions 116 and 117 which are adapted to mesh with a pinion struct a buildin'gin which thetables A and the frame may be operated andby referrin usive 'it controlled by an operator stationed up'on' said crane or frame, or ma be. manipulated- 118 carried by the lower end of a vertical 5 other, a rotary motion'may be transmitted to the shaft 119 and a revoluble motion im-- parted simultaneously to each runner carried iy the'vertical shafts 114 and115. In this figure'of the drawings and in Fig. 9 I have illustrated another way of o erating the table A, the adjustable triangu a'r frame 31 being dispensed with and the cables 28 carried direct from pulleys 4, 4 to a pulley Wheel 120 mounted upon a shaft 121. This shaft isjournaledin the bearings 122, 122 and to said shaft a revoluble motion may be imparted from any desired source of power. a As heretofore stated, to fully accomplish the objects of my improved machine and to expedite the grindin smoothing and polish in of glass I refera I employ a number of ta les over w 'ch the amefD is'ada ted to travel and to still further facilitate t e general operation of my improved machine it Wlll befadvantageous to the same to conto Figs. 10 to 12 inc will be observe that I have mounted therein a modified form of frame which carriesthe runners vE and F. U on the vertical side frames 123, 123 of the uilding I have secured by means 3 of the bracket 124 and eye-beams 125 the tracks 126 and upon said tracks is adapted to travel the overhead crane or frame work 127, this framebeing su ported upon the tracks by the wheels 128 w ch are driven by a motor 129 as clearlyillustrated in Fig. 10 j of the drawings. Centrally, of. the crane and inalinement-with each other are mounted the vertical shafts 130, 130 which upon their lower ends carry the runners E and F and upon'theirup er ends the gear wheels 131, '131 which mesh with the gear wheel. 132 carthe drawingsand the crane or frame work 127 and its appurtenant mechanisms may ,be

from a desired point; wit 'nthe; building from where observations may'be made'as to ried by a vertical-shaft 133 and operated by i .a' motor-134'. The manner of revolving the the progress of the work and at which table the runners are needed.

I do not care to limit myself'to the constructionherein described and illustrated but may employ other means than those shown for'accom lishing the different movements of the tab es and the frames and may make such other chan es as will be er-. mittedby the scope of t e appended .cla1ms..

Having 'fully described .my invention, what I claim and desire to secure by Letters Patent, is:

1. In amachine of the character described, the combination of a hollow rotary shaft,.a flat plate carried by said shaft, a casing having, depending annular ribs,- and apertures communicating with the spaces between said ribs, said casing resti'n on said plate, a series of pipes each lea in from one of the spaces in said casingto t e interior of said hollow shaft, and means for exhausting air from said shaft.

2. In a machine of the character described, the combination of a hollow rotary shaft, a perforated pipe arranged centrall of said shaft, means for exhaustin air om said ipe, a plate carried by sai shaft, a casing ormed ribs.

3. In an-apparatus of the character dewith a series of depending annular ',ribs, and pipes leading from the interior of said hollow shaft to the spaces; between said scribed, the combination of a stationary standard, a hollow shaft rotatably mounted in said standard, -means for rotating said shaft, a stationary pi e extending through said standard and sha t and having perforations in its side walls, and afiat plate carried by said shaft, a casi having a .plurality of depending annular ri s and a plurality of openings extending through the plate between said ribs, a plurality. of suction pipes each extending from the space between two'- of said ribs to. the space in said shaft exterior ,to said perforated pipe, each of said suction pipes being provided with a valve, and

means for exhausting air from" thesaidperforated pipe. In testimo' in the presence of..twowitnesses.-

" Witnessesz l H.-C. EVERT,

W. O. Hnrrz.

EDWARD B GNA LI 5 I 'y whereof I mysignatu're v 

